Hollow Earth Protocol
Michael W Shane
Jun 2026 · Michael W Shane
Ebook
199
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About this ebook
Hollow Earth Protocol is a gripping science fiction adventure set in a future where humanity discovers a hidden civilization buried deep beneath Earth's crust. When a mysterious signal emerges from the planet's core, a team of explorers descends into an immense underground world filled with ancient technology, towering cities, and secrets older than human history. As they uncover the truth, they realize that the fate of both civilizations may depend on a protocol hidden for millions of years.
Hollow Earth Protocol is a gripping science fiction adventure set in a future where humanity discovers a hidden civilization buried deep beneath Earth's crust. When a mysterious signal emerges from the planet's core, a team of explorers descends into an immense underground world filled with ancie...
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